U extrusion



FIG. 1 is a fragmented front, top, reduced left side perspective view of a U extrusion embodying my design;

FIG. 2 is a top plan view thereof, the bottom plan view of the extrusion being a mirror image thereof;

FIG. 3 is a fragmented rear elevational view thereof;

FIG. 4 is a fragmented right side elevational view thereof, the left side elevational view being a mirror image thereof; and,

FIG. 5 is a fragmented front elevational view thereof; it being understood that the extrusion has been broken along one end as an indication of indeterminate length. 

The ornamental design for a U extrusion, as shown and described. 